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Full Discussion: Crontab compressed version
Top Forums UNIX for Dummies Questions & Answers Crontab compressed version Post 302960788 by bakunin on Thursday 19th of November 2015 03:17:44 PM
Old 11-19-2015
Quote:
Originally Posted by zekeboy
30 20 ** 2 tar –cz /home/user1 > /home/user1/backup.tar.gz
Is it alright ?
Sigh...

RudiC has told you two times now to separate the two asterisks by a space. The line as you present it is still wrong because of that and no matter what options to tar you try will change anything about that BECAUSE THIS IS NOT THE PROBLEM IN FIRST PLACE!

Try a layered approach: first, consult the man pages of cron and learn how to configure a (any) command to be run by cron. Only then concern yourself with constructing the correct tar-command: first manually. When it finally does what you want it to do put it into cron using your new-found expertise on creating cron-jobs.

So much as a starter: cron jobs have NOT the same environment as commands run from an interactive session, namely the PATH variable is empty and therefore you should use full pathnames. instead of tar <cmd> /some/path you need to write something like /usr/bin/tar <cmd> /some/path. Notice the full path to the command. Your path might differ, but you can easily get the (on your system) correct path with the which command:

Code:
# which tar
/usr/bin/tar

I hope this helps.

bakunin
 

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BF_TAR(1)						    Bogofilter Reference Manual 						 BF_TAR(1)

NAME
bf_tar - shell script to write a tar file of a bogofilter directory to stdout SYNOPSIS
bf_tar [-r] [-R] bogofilter_directory DESCRIPTION
bf_tar bundles a bogofilter working directory in tar format and copies it to standard output (your console, or where you redirect it, see EXAMPLES below). OPTIONS
The -r option causes bf_tar to remove inactive log files after the archive has been written successfully. The default is to leave log files. The -R option causes bf_tar to remove inactive log files before the archive is written. This may reduce chances that the resulting archive is recoverable should it become damaged. The archive may be smaller though. The default is to leave log files. EXIT STATUS
The script exits with status code 0 if everything went well, and nonzero if it encountered trouble. EXAMPLES
o bf_tar ~/.bogofilter > outfile.tar Writes a standard .tar file containing the essential files from ~/.bogofilter to outfile.tar. o bf_tar ~/.bogofilter | gzip -9 -c > outfile.tar.gz Writes a gzipped .tar.gz file containing the essential files from ~/.bogofilter to outfile.tar.gz. o bf_tar `pwd`/mydirectory > outfile.tar Prepend $(pwd)/ or `pwd`/ if you want to specify an absolute path instead of a relative path. NOTES
This script is meant for use with Berkeley DB based bogofilter versions. This script requires a SUSv2 compliant pax utility. This script expects a SUSv2 compliant shell. Solaris systems should have the SUNWxcu4 package installed (when bogofilter is configured) so that /usr/xpg4/bin/sh can be used. AUTHORS
Matthias Andree Bogofilter 10/22/2012 BF_TAR(1)
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